关于找不到synthesizer_train.py的朋友看这里！

因为版本更新了，但是README并没有更新。
根目录下有一个train.py，原来的synthesizer_train.py已经集成到了train.py里面，通过type参数调用。用法如下：

python train.py --type=synth [自定义模型名称] [预训练SV2TTS\synthesizer目录路径]

列子：
python train.py --type=synth william D:\Common\SV2TTS\synthesizer

Start by comparing the root README with the current root-level train.py entry point and the usage shown in the issue. Check how the --type=synth arguments map to the integrated synthesizer training flow; done means the README no longer directs readers to synthesizer_train.py and documents the current command accurately.

Written by the indexing model from the issue text.